<!--
 * @Author: your name
 * @Date: 2022-04-07 23:23:09
 * @LastEditTime: 2022-04-07 23:37:02
 * @LastEditors: Please set LastEditors
 * @Description: 打开koroFileHeader查看配置 进行设置: https://github.com/OBKoro1/koro1FileHeader/wiki/%E9%85%8D%E7%BD%AE
 * @FilePath: \算法测试\day0906\4.7.html
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
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        for (const [a,b] of arr.entries()) {
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        console.log(arr.toString());
        console.log(arr.valueOf());
        console.log(arr.toLocaleString());
        console.log('45678'.split("").join("") === '45678');
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</body>
</html>